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Finding the Fourth Proportional to 124,675.92, 172,051.86 and 68,087.28

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Solution

The fourth proportional to 124,675.92, 172,051.86 and 68,087.28 is: 93,959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,675.92 : 172,051.86 = 68,087.28 : x
  2. Step 2: Convert to fraction form
    124,675.92/172,051.86 = 68,087.28/x
  3. Step 3: Cross multiply
    124,675.92x = 172,051.86 × 68,087.28
  4. Step 4: Simplify right side
    124,675.92x = 11,714,543,166.34
  5. Step 5: Solve for x
    x = 11,714,543,166.34/124,675.92
  6. Step 6: Final answer
    x = 93,959.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.